Starting My Graduation Project at Home
During almost every vacation, I carried my clumsy laptop and books home from my university. However, during this winter vacation, I left my laptop at school. I thought I wouldn't need it, since this vacation was so short and I would be spending all of it celebrating the Spring Festival, the largest festival in China. Unfortunately, COVID-19 broke out, which led to me staying home. This week, the new semester started online in my university. As a senior student, I was supposed to start my graduation project at home. How sad I was when I realized that my poor laptop was still at my dormitory, lonely and far away from me, carrying all my familiar tools and materials. Nevertheless, I realized that it could be an opportunity for me to practice my skills again. I wish that all will get better soon.
Nice job! Some good english in here. Most of the mistakes were simple preposition errors - these are tough! Some notes:
"I will glean the useful materials and try to start my project soon." - This sentence didn't make sense to me. "Glean" is a fairly rare word and I don't know what it would mean in this context. I wouldn't use this word. If you must use it, I think it's unnatural to use it without a clear indication of _where_ you are gleaning "useful materials" from. You can't use the definite article "the" for something as vague as "useful materials" - using "the" means you're referring to something definite, but you aren't. Materials also likely shouldn't be pluralized. Maybe better would be "I will glean useful material from wherever I can and try to start my project soon". Although, as I said, that doesn't sound very natural since glean is such an uncommon word.
"However, during this winter vacation I left my laptop in school in school as this vacation was so short and we Chinese would celebrate the Spring Festival, which is the largest festival of Chinese."
<ul><li>Structurally, this sentence is too complicated to work. You are saying "However, X as <Reason 1> and <Reason 2>" but if <Reason 1> and <Reason 2> get too long, this starts to sound very unnatural. Here, <Reason 2> has several relative clauses, which is a disaster and not something you'd see except in very erudite prose.</li><li>"the largest festival of Chinese" isn't good, you need an article on "Chinese", but even "the largest festival of the Chinese", sounds wrong. I would say "the largest festival in China"</li><li>The sentence, despite being long, is quite vague. There's an implication that because of the reasons you mentioned, you thought you wouldn't need your laptop. This implication would be better to state rather than to leave implied.</li></ul>
"I got to realize that maybe it is a opportunity.." "I got to realize that <fact>" doesn't sound right. Simply "I realized that <fact>" is more natural. Also, you are mixing tenses, "I got to" would seem to be a past tense, where as "is an opportunity" is a present tense, which is incompatible. A better sentence start would be "I realized that maybe it was an opportunity" or "I realized that it could be an opportunity"
"How sad I was when I realized that my poor laptop was still at my dormitory, lonely and far away from me, carrying all my familiar tools and materials" - This is a great sentence and sounds quite poetic to me. I really enjoyed it.